MESON Chess Problem Database

Problem Display
PID: 267375 (N1n5/2P5/2ppP1R1/3kp3/1Q1N1p2/p1P2P2/PnK5/8 w - - 0 1)

van der Scheur, D

Schakend Nederland, 1979

N1n5/2P5/2ppP1R1/3kp3/1Q1N1p2/p1P2P2/PnK5/8

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sb6
      • 2.Sxb6#
    • 1...Sa7
      • 2.Sb6#
    • 1...Se7
      • 2.Sb6#
    • 1...exd4
      • 2.Qxd4#
    • 1...e4
      • 2.Rg5#
  • Tries
    • 1.Se2?
      • 1...e4
        • 2.Qd4#
      • 1...c5
        • 2.Qe4#
      • 1...Sd1
        • 2.c4#
      • 1...Sd3
        • 2.c4#
      • 1...Sa4
        • 2.c4#
      • 1...Sb6
        • 2.Sxb6#
      • 1...Sa7
        • 2.Sb6#
      • 1...Se7
        • 2.Sb6#
      • 1...Sc4!
    • 1.Sb3?
      • threat
        • 2.Qe4#
      • 1...e4
        • 2.Qd4#
        • 2.Qxe4#
      • 1...Sc4!
    • 1.Sb5?
      • 1...cxb5
        • 2.Qxb5#
      • 1...e4
        • 2.Qd4#
      • 1...c5
        • 2.Qe4#
      • 1...Sd1
        • 2.c4#
      • 1...Sd3
        • 2.c4#
      • 1...Sa4
        • 2.c4#
      • 1...Sb6
        • 2.Sxb6#
      • 1...Sa7
        • 2.Sb6#
      • 1...Se7
        • 2.Sb6#
      • 1...Sc4!
    • 1.Sf5?
      • 1...e4
        • 2.Qd4#
      • 1...c5
        • 2.Qe4#
      • 1...Sd1
        • 2.c4#
      • 1...Sd3
        • 2.c4#
      • 1...Sa4
        • 2.c4#
      • 1...Sb6
        • 2.Se7#
        • 2.Sxb6#
      • 1...Sa7
        • 2.Se7#
        • 2.Sb6#
      • 1...Se7
        • 2.Sxe7#
        • 2.Sb6#
      • 1...Sc4!
  • Keys
    • 1.Kb3!
      • 1...exd4
        • 2.Qxd4#
      • 1...e4
        • 2.Rg5#
      • 1...Sd1
        • 2.Qc4#
      • 1...Sd3
        • 2.Qc4#
      • 1...Sa4
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sb6
        • 2.Sxb6#
      • 1...Sa7
        • 2.Sb6#
      • 1...Se7
        • 2.Sb6#
      • 1...c5
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(h);N_GUARD::S(J),XS(h)
    • S(h);N_GUARD::S(J)
    • P(e);OGATE,XS(F)::QAR1(E),XP(e)
    • P(e);OGATEB::R(H)
  • Tries
    • Try
      • S(F);
      • Vars
        • P(e);N_GUARD::QAR1(E)
        • P(f);SBLOCK::QAB1(E)
        • S(a);N_GUARD::P(C)
        • S(h);N_GUARD::S(J),XS(h)
        • S(h);N_GUARD::S(J)
      • Refutation
        • S(a);
    • Try
      • S(F);
      • Threat
        • QAB1(E)
      • Refutation
        • S(a);
    • Try
      • S(F);
      • Vars
        • P(f);OGATE,XS(F)::QAR2(E),XP(f)
        • P(e);N_GUARD::QAR1(E)
        • P(f);SBLOCK::QAB1(E)
        • S(a);N_GUARD::P(C)
        • S(h);N_GUARD::S(J),XS(h)
        • S(h);N_GUARD::S(J)
      • Refutation
        • S(a);
    • Try
      • S(F);
      • Vars
        • P(e);N_GUARD::QAR1(E)
        • P(f);SBLOCK::QAB1(E)
        • S(a);N_GUARD::P(C)
      • Refutation
        • S(a);
  • Actual
    • K(B);S_FLIGHT
    • Vars
      • P(e);OGATE,XS(F)::QAR1(E),XP(e)
      • P(e);OGATEB::R(H)
      • S(a);N_GUARD::QAB1(E)
      • S(a);N_GUARD::QAB1(E),XS(a)
      • S(h);N_GUARD::S(J),XS(h)
      • S(h);N_GUARD::S(J)
      • P(f);OGATEB,SBLOCK::QAB(E)
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